Split-type crushing mechanism with good adaptability and its installation structure

Abstract

The present invention relates to a split-type crushing mechanism with good adaptability and its installation structure. The crushing mechanism includes a swing arm. One end of the swing arm housing of the swing arm is provided with a tubular structure extending forward and backward. A rotating shaft is rotatably supported in the inner cavity of the tubular structure. The swing arm housing is also provided with front and rear arm frames. The inner cavity of the front arm frame communicates with the tubular structure. The front and rear ends of a connecting shaft are respectively rotatably supported on the front and rear arm frames. A crushing tooth is fixedly installed on the connecting shaft. The front part of the rotating shaft is in transmission connection with the front part of the connecting shaft through a transmission system located in the front arm frame. The swing arm housing is symmetric up and down. The installation structure includes a mining machine rocker arm and a crushing mechanism. The crushing mechanism is installed inside the L-shaped corner of the rocker arm. The front end of the rotating shaft is coaxially connected with the rear end of the gear shaft of a transmission gear inside the arm frame. An oil cylinder is connected between the arm frame and the swing arm. The present invention can be used for mining machines for thin ore layer mining and has left-right interchangeability and universality.

Description

Technical Field

[0001] The invention relates to a split type crushing mechanism, which is not only suitable for bauxite mining machines for mining thinner ore layers or high-grade thin ore layers, but also has good adaptability to mining machines and conveyors of different specifications. Background Art

[0002] In order to adapt to the mining of thinner or high-grade thin ore layers, bauxite mining machines usually use rocker arms with high-power (high-torque) cutting systems. The rocker arms are low in height, compact in structure, and have high power density. The cutting motor installed in the rocker arm housing occupies a large space in the front and rear directions, resulting in insufficient space between the cutting motor and the cable trough to install conventional crushing devices. However, in actual mining by mining machines, a large amount of high-hardness bauxite often appears. After entering the conveyor, these bauxite rocks need to pass under the location of the rocker arm's cutting motor, but many of them are large rocks that cannot pass through. Eventually, the accumulation causes the conveyor to be unable to transport, and the machine needs to be stopped for manual cleaning, which is time-consuming and labor-intensive, and also affects production capacity.

[0003] Due to the need for stratified mining of bauxite, it is often necessary to set crushing mechanisms at both the left and right rocker arms, which requires improving the versatility and interchangeability of the left and right crushing mechanisms. Summary of the invention

[0004] The purpose of the present invention is to provide a split crushing mechanism with good adaptability, which can be used in mining machines for mining thinner ore layers and has interchangeability and versatility in installation and connection between the split crushing mechanism and the left and right rocker arms of the mining machine.

[0005] The main technical solutions of the present invention are:

[0006] The swivel arm is connected with the support frame of the front wheel shaft through the support frame, and the swivel arm is connected with the support frame of the front wheel shaft through the support frame.

[0007] The front part of the rotary shaft can be configured as an external gear, the front part of the connecting shaft can be provided with an external spline, and the transmission system is a fixed-axis gear transmission system. According to the transmission direction, its first gear is externally meshed with the external gear on the rotary shaft, and its last gear is sleeved on the connecting shaft and is spline-connected to the front part of the connecting shaft.

[0008] At the connection between the rear boom and the main housing, a spacer plate can be provided or not provided in the front-rear direction between the two.

[0009] Preferably, a plurality of bushings are sleeved side by side and fixed on the connecting shaft, and a plurality of the crushing teeth are fixedly installed on each bushing.

[0010] The split-type crushing mechanism with good adaptability preferably further includes a mechanical protection structure. The mechanical protection structure includes a bracket and a plurality of rollers installed on the bracket. The bracket is fixed on the front boom, the axes of the rollers extend horizontally in the front-rear direction, the rollers are circumferentially spaced within an arc-shaped area with the axis of the connecting shaft as the axis, the position of this arc-shaped area is lower than the axis of the connecting shaft, the maximum distance from the edge of the roller to the axis of the connecting shaft is greater than the radius of the cutting circle of the crushing teeth, and the bracket is symmetric in the front-rear direction.

[0011] The split-type crushing mechanism with good adaptability can further include a fixed seat and an oil cylinder. The fixed seat has a C-shaped structure, and is provided with a front support arm and a rear support arm opposite to each other in the front-rear direction. The swing arm housing is horizontally hinged in the front-rear direction on the fixed seat with the tubular structure as the axis. The front and rear ends of the tubular structure are respectively supported on the front support arm and the rear support arm. One end of the oil cylinder is hinged on the fixed seat, and the other end is hinged on the swing arm housing. The fixed seat is symmetric in the up-down direction.

[0012] The fixed seat can include an end plate, a front support plate and a rear support plate. One ends of the front support plate and the rear support plate are respectively detachably and fixedly connected to the front and rear side edges of the end plate, and the other ends extend. The front support plate and the rear support plate respectively serve as the front support arm and the rear support arm.

[0013] An installation structure of a split-type crushing mechanism with good adaptability includes a mining machine rocker arm and the split-type crushing mechanism with good adaptability. The housing of the mining machine rocker arm is an L-shaped structural unit including a cylinder and an arm. The cylinder extends in the front-rear direction, the arm extends in the left-right direction, the cylinder is located behind one end of the arm, the split-type crushing mechanism with good adaptability is installed inside the L-shaped corner, the fixed seat is fixedly connected to the side of the cylinder, the front part of the tubular structure is positioned and connected with the rear part of the arm through a circular stop structure. The circular stop structure is coaxial with the rotary shaft, and the front end of the rotary shaft is coaxially connected with the rear end of the gear shaft of a transmission gear inside the arm.

[0014] The rear end of the gear shaft of the transmission gear and the front end of the rotary shaft are each provided with internal splines, and the gear shaft of the transmission gear and the rotary shaft are simultaneously spline-connected to the front and rear parts of a spline shaft.

[0015] The beneficial effects of the present invention are as follows:

[0016] No power device is provided on the swing arm which is the main body of the crushing mechanism, and only a power input end is provided, greatly reducing the volume of the swing arm, especially the space occupied in the front and rear directions, making it possible to apply such a swing arm to a mining machine with a low fuselage. And the structure of the swing arm itself also becomes simple.

[0017] Since the structure of a connecting shaft plus crushing teeth is used to replace the traditional crushing drum, the structure of the crushing part becomes very simple, and the manufacturing cost and use cost are lower.

[0018] Since the crushing teeth and corresponding bushings with different parameters can be installed at different positions in the front and rear of the connecting shaft according to the actual distribution characteristics of the rock block size on the conveying trough of the conveyor in the front and rear directions, it can perform crushing more targeted, achieving better crushing effects with more reasonable investment.

[0019] Since a transmission gear of the cutting transmission system of the mining machine is used as a power device to provide power for the swing arm, and the swing arm is installed inside the L-shaped corner of the rocker arm of the mining machine, it not only saves installation space but also solves the power source problem, enabling the installation of a crushing mechanism on a mining machine used for mining thinner ore layers or high-grade thin ore layers. Therefore, it can effectively crush large-sized rock blocks, enabling the rock blocks to pass smoothly under the rocker arm of the mining machine and avoiding accumulation.

[0020] The transmission from the cutting transmission system to the transmission system of the swing arm is connected through a spline shaft, realizing overload protection, improving the stability of the transmission, and the floating connection of the spline can improve the centering of the swing arm housing and the transmission gear, thus improving the stability of the transmission.

[0021] Since a mechanical protection structure is provided, when the swing arm swings downward, the mechanical protection structure can first contact the top surface of the front side trough rib of the conveyor, thus restricting the lowest height of the crushing teeth and preventing the crushing teeth from damaging the conveyor located directly below them.

[0022] Since the swing arm housing and the fixed seat are both symmetric structures up and down, the swing arm which is the main body of the split-type crushing mechanism has left-right interchangeability in the installation on the mining machine. The fixed seat is set as a split-type structure, and by replacing the front and rear support plates with different lengths, the split-type crushing mechanism can be adapted to rocker arms with different wheelbases.

[0023] Since the swing arm housing is provided with a split-type detachable connection structure, the split-type crusher can be adapted to conveyors of various different widths by setting or not setting a backing plate in the front-back direction between the rear boom and the main housing, increasing or decreasing the thickness of the backing plate, etc.

[0024] The overall interchangeability of the split-type crusher of the present invention is good, which can reduce a large amount of drawing work, reduce inventory, and improve utilization rate. Brief Description of the Drawings

[0025] Figure 1 is a schematic diagram of the connection and installation of the split-type crushing mechanism of the present invention on a double-roller mining machine;

[0026] Figure 2 is a schematic structural diagram of an embodiment of the assembly composed of the fixed seat, swing arm and oil cylinder;

[0027] Figure 3 is Figure 2 a schematic structural diagram of the fixed seat described in;

[0028] Figure 4 is Figure 3 a view from direction B of;

[0029] Figure 5 is Figure 2 a sectional view taken along line A-A of;

[0030] Figure 6 is a schematic structural diagram of a second embodiment of the assembly composed of the fixed seat, swing arm and oil cylinder;

[0031] Figure 7 is Figure 6 a schematic diagram of the connection and installation of the shown embodiment on the rocker arm of a mining machine;

[0032] Figure 8 is a schematic structural diagram of a third embodiment of the assembly composed of the fixed seat, swing arm and oil cylinder;

[0033] Figure 9 is Figure 8 a schematic diagram of the connection and installation of the shown embodiment on the rocker arm of a mining machine.

[0034] Reference Signs:

[0035] 1. Swing arm; 11. Fixed seat; 111. End plate; 112. Pin; 113. Articulated seat; 114. Front support plate; 1141. Front pin shaft; 1142. Front wear-resistant sleeve; 115. Rear support plate; 1151. Rear pin shaft; 1152. Rear wear-resistant sleeve; 11'. Fixed seat; 114'. Front support plate; 115'. Rear support plate; 12. Swing arm housing; 121 .front arm frame; 122.rear arm frame; 123.articulated seat; 124.transmission system; 1241.rotating shaft; 1242.connecting shaft; 125.crushing teeth; 126.shield; 127.tubular structure; 1271-1272.interface structure; 128.pad; 12'.swing arm housing; 1242'.connecting shaft; 13.oil cylinder; 14.mechanical protection structure;

[0036] 2. Mining machine rocker arm; 22. Transmission gear; 2'. Mining machine rocker arm;

[0037] 3. Spline shaft;

[0038] 91. Conveyor. DETAILED DESCRIPTION

[0039] The present invention discloses a split type crushing mechanism with good adaptability, such as Figures 1-9 As shown, it includes a swing arm 1, which includes a swing arm housing 12, a rotating shaft 1241 and a connecting shaft 1242. One end of the swing arm housing is provided with a tubular structure 127 extending forward and backward, and the swing arm will swing around the tubular structure. The rotating shaft is arranged in the inner cavity of the tubular structure, and the front and rear ends of the rotating shaft are respectively supported by bearings at the front and rear ends of the inner cavity of the tubular structure. The swing arm housing includes a main housing and a rear arm frame 122. The tubular structure is a part of the main housing. The front part of the main housing and the side of the tubular structure are provided with a narrow and long front arm frame 121 extending left and right. The inner cavity of the forearm frame is connected with the front inner cavity of the tubular structure. The rear arm frame is detachably fixedly connected to the main housing and is opposite to the front and rear of the forearm frame. The front and rear ends of the connecting shaft are respectively supported by the front and rear arms. The connecting shaft is parallel to the rotating shaft and is away from the rotating shaft. A crushing tooth 125 is fixedly installed on the connecting shaft. The front part of the rotary shaft is connected to the front part of the connecting shaft through the transmission system 124 located in the inner cavity of the front arm frame. The front end of the rotary shaft is the power input end. The external power is input from the rotary shaft and transmitted to the connecting shaft through the transmission system, so that the connecting shaft rotates and the crushing teeth rotate accordingly, thereby crushing the rock blocks. The front end of the rotary shaft is provided with a power input interface structure. The swing arm housing is symmetrical up and down, so that the same swing arm can be installed on the left rocker arm of the mining machine or the right rocker arm of the mining machine.

[0040] The front end of the rotary shaft serves as the power input end, providing an interface structure for introducing power from the cutting drive system of the mining machine boom. Therefore, the corresponding split-type crushing mechanism does not require a separate power device such as an electric motor or a hydraulic motor. Compared with the existing structure where the power device is connected axially to the crusher drum in sequence, the front and rear dimensions of the crushing mechanism are greatly shortened. Compared with the existing structure where the power device is arranged inside the crusher drum, the left-right and up-down dimensions of the crushing mechanism of the present invention at the position corresponding to the traditional crusher drum are also correspondingly reduced. It can be seen that the structure of the present invention is more compact. Therefore, it becomes possible to apply the present invention to mining machines for mining thinner ore layers or high-grade thin ore layers. Moreover, since the present invention uses a structure of a connecting shaft plus crushing teeth to replace the traditional crushing drum, the structure becomes very simple, and the manufacturing cost and usage cost are lower.

[0041] The front part of the rotary shaft is provided with an external gear, and the front part of the connecting shaft is provided with an external spline. The front and rear ends of the external spline on the connecting shaft are rotationally supported on the front and rear side walls of the front arm frame. The transmission system 124 is a fixed-axis gear transmission system. According to the transmission direction, its first gear is externally meshed with the external gear on the rotary shaft, and its last gear is sleeved on the connecting shaft and is connected to the front spline of the connecting shaft.

[0042] Preferably, a plurality of bushings are sleeved side by side on the connecting shaft and are circumferentially fixed. A plurality of the crushing teeth are fixedly installed on each bushing. The crushing teeth on each bushing are preferably circumferentially evenly distributed. Each bushing and the connecting shaft can be connected by a plurality of circumferentially evenly distributed flat keys, which is reliable for circumferential fixation and convenient for axial installation and disassembly of the bushing. The front and rear arm frames play a role of front and rear limiting for the bushing. When a certain crushing tooth is damaged, only the crushing tooth and its corresponding bushing need to be replaced, and the maintenance is simple and convenient.

[0043] In addition, according to the actual distribution characteristics of the block size of the rock blocks on the conveying trough of the conveyor in the front and rear directions, crushing teeth and corresponding bushings with different parameters can be installed at different positions in the front and rear of the connecting shaft.

[0044] At the connection between the rear arm frame and the main housing, a spacer 128 can be provided or not provided in the front and rear directions between the two. The rear arm frame, the main housing, and the spacer can be positioned and connected by multiple pins. When the spacer is provided, the distance between the front and rear arm frames becomes larger than that without the spacer, and the reconfigured swing arm housing 12' is wider in the front and rear, so that the crushing mechanism can adapt to a wider conveyor 91. Of course, it is necessary to replace the longer connecting shaft 1242' at the same time and add bushings and crushing teeth on the connecting shaft (see Figure 6 、 7 ).

[0045] A shield 126 is installed on the main housing. The shield covers above the connecting shaft to prevent the broken rock pieces from splashing upward. The shield can also be a front-back symmetric structure to maintain its interchangeability for installation on the left and right crushing mechanisms.

[0046] The split-type crushing mechanism with good adaptability further includes a mechanical protection structure 14 for preventing the crushing teeth from damaging the conveyor located below the crushing mechanism. The mechanical protection structure includes a bracket and a plurality of rollers installed on the bracket. The bracket is fixed on the front arm frame. The axes of the rollers extend horizontally in the front-back direction. The rollers are circumferentially spaced within an arc-shaped area with the axis of the connecting shaft as the axis. The position of this arc-shaped area is lower than the axis of the connecting shaft. The rollers can rotate freely relative to the bracket. The maximum distance from the edge of the roller to the axis of the connecting shaft is greater than the radius of the cutting circle of the crushing teeth. Even when the swing arm is at the lower limit position of its swing, since the rollers contact the top surface of the front side rib of the conveyor first, the top of the conveyor trough can be avoided being cut by the crushing teeth. The bracket is symmetric in the front-back direction, and the rollers are installed in the middle of the bracket in the front-back direction, so that the same bracket or the mechanical protection structure can be installed on the split-type crushing mechanism on the left side of the mining machine or on the split-type crushing mechanism on the right side of the mining machine.

[0047] The split-type crushing mechanism with good adaptability further includes a fixed seat 11 and an oil cylinder 13. The fixed seat has a C-shaped structure with a front support arm and a rear support arm opposite to each other in the front-back direction. The swing arm housing is horizontally hinged to the fixed seat in the front-back direction with the tubular structure as the axis. The front and rear ends of the tubular structure are respectively supported on the front support arm and the rear support arm. One end of the oil cylinder is hinged to the fixed seat, and the other end is hinged to the swing arm housing, especially on the outside of the tubular structure. Driven by the telescopic movement of the oil cylinder, the swing arm housing can swing up and down relative to the fixed seat with the tubular structure as the axis, so as to realize the adjustment of the height of the connecting shaft and the crushing teeth. There is only one oil cylinder, and its installation positions relative to the fixed seat and the swing arm housing are preferably centered in the front-back direction. The fixed seat is symmetric in the up-down direction, and the same fixed seat can be used for the split-type crushing mechanism on the left side of the mining machine and also for the split-type crushing mechanism on the right side of the mining machine.

[0048] Further, a front wear-resistant sleeve 1142 can be provided between the front support arm and the tubular structure, and a rear wear-resistant sleeve 1152 can be provided between the rear support arm and the tubular structure. The front and rear wear-resistant sleeves are in tight fit with the front and rear ends of the tubular structure respectively and are in clearance fit with the front and rear support arms respectively. The front and rear wear-resistant sleeves can reduce the wear of the tubular structure and extend the service life of the swing arm housing.

[0049] The fixed seat includes an end plate 111, a front support plate 114, and a rear support plate 115. One end of the front support plate and the rear support plate are respectively detachably and fixedly connected to the front and rear side edges of the end plate, and the other end extends. The front support plate and the rear support plate respectively serve as the front support arm and the rear support arm. In the embodiment shown in the attached drawings, the front and rear support plates are respectively positioned and connected to the front and rear side edges of the end plate by a front pin shaft 1141 and a rear pin shaft 1151. The fixed seat adopts a split structure, which facilitates the installation of the swing arm housing, the front and rear wear-resistant sleeves, etc. Moreover, by replacing the front support plate 114' and the rear support plate 115' with different lengths, the left and right lengths of the corresponding fixed seat 11' also change. As a result, the split crushing mechanism can adapt to the rocker arms 2' of mining machines with different wheelbases (see Figure 8 , 9 . The rocker arm 2' of the mining machine is longer and longer front and rear support plates need to be replaced). When the oil cylinder is located between the end plate and the swing arm housing, a hinge seat 113 and a hinge seat 123 are respectively installed on the upper part of the end plate and the lower part of the tubular structure. The two ends of the oil cylinder are respectively connected to these two hinge seats. Due to the upper and lower symmetry characteristics of the fixed seat and the swing arm housing, two interface structures for installing the hinge seat 113 are symmetrically arranged on the upper and lower parts of the end plate of the fixed seat, and two interface structures 1271 and 1272 for installing the hinge seat 123 are also symmetrically arranged on the upper and lower parts of the outer side of the tubular structure.

[0050] The present invention also discloses an installation structure of a split crushing mechanism with good adaptability, including a rocker arm 2 of a mining machine and the split crushing mechanism with good adaptability. The housing of the rocker arm of the mining machine is an L-shaped structural unit including a cylinder body and an arm frame. The cylinder body extends forward and backward, and the arm frame extends left and right. The cylinder body is located behind one end of the arm frame. The split crushing mechanism with good adaptability is installed inside the corner of the L-shape, which can make full use of the space and does not occupy extra space in the front and rear directions, and can realize the installation of the crushing device on a mining machine with a low fuselage. Wherein the fixed seat is fixedly connected to the side surface of the cylinder body, and the front part of the tubular structure is positioned and connected to the rear part of the arm frame through a circular stop structure. The circular stop structure is coaxial with the rotation shaft to keep the axis of the swing arm housing fixed relative to the rocker arm of the mining machine when the swing arm housing swings. The front end of the rotation shaft is coaxially connected to the rear end of the gear shaft of a cutting transmission system gear 22 inside the arm frame. The transmission gear provides power for the rotation of the crushing teeth instead of the traditional motor.

[0051] In this embodiment, the connection method between the fixed seat and the cylinder body is as follows: a shallow groove with a flat groove bottom surface is cut on the side surface of the cylinder body, and a pin hole is provided on the groove bottom surface. The back surface of the end plate is attached to the groove bottom surface, and the end plate and the cylinder body are positioned by one surface (i.e., the groove bottom surface) and two pins (i.e., pin 112).

[0052] The rear end of the gear shaft of the transmission gear is provided with an internal spline, and the front end of the rotary shaft is also provided with an internal spline, and this internal spline constitutes the power input interface structure. The gear shaft of the transmission gear and the rotary shaft are simultaneously spline-connected to the front and rear parts of a spline shaft 3. Due to the floating characteristics of the spline connection, the swing arm housing 12 and the transmission gear 22 can be made to have centering, thus improving the stability of the transmission. In addition, when crushing overly hard rock blocks or when jamming occurs, the spline shaft breaks first, which can protect the cutting transmission system and the transmission system of the crushing mechanism in the front arm frame, so the reliability of the transmission can be improved.

[0053] Further, a front end cover is sleeved on the radial outer part of the front end of the rotary shaft, and the rear part of the front end cover is embedded and fixed in the tubular structure. A rear end cover is sleeved on the radial outer part of the rear end of the gear shaft of the transmission gear, and the front part of the rear end cover is embedded and fixed on the boom. Axial and radial positioning connections are achieved between the front end cover and the rear end cover through a circular stop structure. Since the front end cover is fixed on the tubular structure, the rear end cover is fixed on the boom, and the front end cover and the rear end cover are positioned through the circular stop structure, it plays the same role as the front part of the tubular structure and the rear part of the boom being positioned through the circular stop structure, which is not only the positioning of the swing center line of the swing arm housing, but also the protection of the connection between the transmission system in the swing arm and the cutting transmission system.

[0054] As used in this article, the front and rear respectively correspond to Figure 1 the upper and lower in the perspective.

Claims

1. A split crushing mechanism with good adaptability, Features: The invention comprises a swing arm, wherein the swing arm comprises a swing arm housing, a rotating shaft and a connecting shaft, one end of the swing arm housing is provided with a tubular structure extending forward and backward, the rotating shaft is arranged in the inner cavity of the tubular structure, and the front and rear ends of the rotating shaft are respectively rotatably supported at the front and rear ends of the inner cavity of the tubular structure, the swing arm housing comprises a main housing and a rear arm frame, a front arm frame is arranged at the front part of the main housing and beside the tubular structure, the inner cavity of the forearm frame is communicated with the front inner cavity of the tubular structure, the rear arm frame is detachably fixedly connected to the main housing, and is opposite to the front and rear of the forearm frame, the front and rear ends of the connecting shaft are respectively rotatably supported on the forearm frame and the rear arm frame, a crushing tooth is fixedly installed on the connecting shaft, the front part of the rotating shaft is transmission-connected with the front part of the connecting shaft through a transmission system located in the inner cavity of the forearm frame, the front end of the rotating shaft is a power input end, no power device is arranged on the swing arm, only the power input end is arranged, the front end of the rotating shaft is coaxially connected with the rear end of the gear shaft of a transmission gear in the arm frame of the mining machine rocker arm, and the swing arm housing is symmetrical up and down.

2. The split crushing mechanism with good adaptability as claimed in claim 1, Features: The front part of the rotating shaft is configured as an external gear, the front part of the connecting shaft is provided with an external spline, and the transmission system is a fixed-axis gear transmission system. According to the transmission direction, its first gear is externally meshed with the external gear on the rotating shaft, and its last gear is sleeved on the connecting shaft and connected with the front spline of the connecting shaft.

3. The split crushing mechanism with good adaptability as claimed in claim 1, Features: At the connection between the rear arm support and the main housing, a pad is provided or not provided between the two in the front-to-back direction.

4. The split type crushing mechanism with good adaptability as claimed in claim 1, Features: A plurality of shaft sleeves are sleeved and fixed side by side outside the connecting shaft, and a plurality of the crushing teeth are fixedly mounted on each shaft sleeve.

5. The split crushing mechanism with good adaptability as claimed in claim 1, Features: A shield is installed on the main shell, and the shield covers the top of the connecting shaft.

6. The split type crushing mechanism with good adaptability as claimed in claim 1, Features: It also includes a mechanical protection structure, which includes a bracket and a plurality of rollers installed on the bracket, the bracket is fixed on the forearm bracket, the axis of the roller extends horizontally front and back, the rollers are circumferentially spaced in an arc area with the axis of the connecting shaft as the axis, the position of the arc area is lower than the axis of the connecting shaft, the farthest distance from the edge of the roller to the axis of the connecting shaft is greater than the radius of the cutting circle of the crushing tooth, and the bracket is symmetrical front and back.

7. A split type crushing mechanism with good adaptability as claimed in claim 1, 2, 3, 4, 5 or 6, Features: It further includes a fixed seat and an oil cylinder. The fixed seat is of a C-shaped structure, on which there are a front support arm and a rear support arm that face each other front and back. The swing arm housing is horizontally hinged to the fixed seat front and back with the tubular structure as the axis. The front and rear ends of the tubular structure are respectively supported on the front support arm and the rear support arm. One end of the oil cylinder is hinged to the fixed seat, and the other end is hinged to the swing arm housing. The fixed seat is symmetric up and down.

8. The split-type crushing mechanism with good adaptability according to claim 7, characterized in that: The fixed seat includes an end plate, a front support plate and a rear support plate. One ends of the front support plate and the rear support plate are respectively detachably and fixedly connected to the front and rear side edges of the end plate, and the other ends extend. The front support plate and the rear support plate respectively serve as the front support arm and the rear support arm.

9. An installation structure of a split-type crushing mechanism with good adaptability, characterized in that: It includes a mining machine rocker arm and the split-type crushing mechanism with good adaptability according to claim 7 or 8. The housing of the mining machine rocker arm is an L-shaped structural unit including two parts, a cylinder body and an arm frame. The cylinder body extends back and forth, and the arm frame extends left and right. The cylinder body is located behind one end of the arm frame. The split-type crushing mechanism with good adaptability is installed inside the corner of the L-shaped structural unit. The fixed seat is fixedly connected to the side of the cylinder body. The front part of the tubular structure and the rear part of the arm frame are positioned and connected through a circular stop structure, and the circular stop structure is coaxial with the rotation axis.

10. The installation structure of the split-type crushing mechanism with good adaptability according to claim 9, characterized in that: The rear end of the gear shaft of the transmission gear and the front end of the rotation axis are respectively provided with internal splines. The gear shaft of the transmission gear and the rotation axis are simultaneously spline-connected to the front and rear parts of a spline shaft.

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